Make it possible to set a uuid if one was not set during DM_DEV_CREATE.
Peter Rajnoha tested this this morning and 'dmsetup remove' hung.
On Fri, Oct 08, 2010 at 01:53:43PM -0400, Peter Jones wrote:
> + if (param->flags & DM_NEW_UUID_FLAG) {
> + /*
> + * Does this device already have a uuid?
> + */
> + if (hc->uuid) {
> + DMWARN("asked to change uuid of device with uuid "
> + "already set %s %s -> %s",
> + param->name, hc->uuid, param->uuid);